diff --git a/config/settings.py b/config/settings.py
index 564aa38..8573f80 100644
--- a/config/settings.py
+++ b/config/settings.py
@@ -70,6 +70,7 @@ TEMPLATES = [
 ]
 
 WSGI_APPLICATION = 'config.wsgi.application'
+DEFAULT_AUTO_FIELD = 'django.db.models.AutoField'
 
 DATABASES = {
     'default': env.db('DATABASE_URL', default='sqlite:///db.sqlite3'),